WSANs中基于竞拍和iMesh的服务发现方法

Service Discovery Methods Based on Auctions and iMesh in WSANs

针对无线传感器和执行器网络中服务发现问题,提出一种融合距离敏感的最新信息网格和竞拍协议的服务发现方法。首先,当传感器接收到事件信息时,使用i Mesh算法交叉查找附近的执行器,在垂直和水平方向发送搜索消息,找出有可能是最接近的执行器;然后,利用本地化竞拍聚合协议寻找出最接近的执行器对事件执行相应措施;最后,将所提方法与基本i Mesh和Quorum方法在两种场景下(连通的执行器网络和随机部署)进行对比,利用距离敏感服务发现效率和通信成本作为评估指标。仿真结果表明,找到最接近的执行器是可行的,相比于其他方法,获得了最高的发现率且通信成本较低。

For the issue that the service discovery in wireless sensor and actuator networks,a method that combination of distance-sensitive service discovery latest information grid and auction protocol approach is proposed.First,when the sensor receives the event information using the actuator i Mesh algorithm to find nearby intersection,with the search message transmitted vertical and horizontal directions,it is possible to identify the closest actuator;then polymerized using a localized Auction Protocol to find out the nearest actuators corresponding measures on the event. The proposed method and the basic i Mesh and Quorum methods in both scenarios（ actuator network connectivity and random deployment） are compared using the distance-sensitive service discovery efficiency and communication cost as the evaluation index. Simulation results show that this method to find the closest actuator is feasible compared to other methods,to obtain the highest detection rate and low communication cost.